For the energy constrains wireless sensor nodes, it is a great challenge to effectively extend the WSN lifetime. A nodes-scheduling scheme for maximizing lifetime of WSN is proposed. At first, the linear programming technique is used for computing the maximal lifetime of the system. Then, by computing the workload matrixes, dividing them into a sequence of schedule matrixes and determining the sensor surveillance tree, the optimized nodes-scheduling from the active sensor nodes to BS is got. The nodes-scheduling for WSN is optimized and the lifetime of WSN is maximized with our scheme when tak...
